1. Application of a global age-coding system ("WRP"), based on molts and plumages, for use in demographic and other studies of birds. Issue 1 (25th October 2021) Authors: Pyle, Peter; Gahbauer, Marcel; Johnson, Erik I; Ryder, Thomas B; Wolfe, Jared D Journal: Ornithology Issue: Volume 139:Issue 1(2022) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗